Fourth to joseph a



J. BWART.

MA1-m5155515: d (Gygax/@XM DOOR CHECK.

v Patented Nov. 30, 1897.

Nrrnn *rares ArnN'r Fries.

JOHN EWART, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR OF ONE- FOURTH TO JOSEPH A. EVART, OF SAME PLACE.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 594,613, dated November 30, 1897.

Application led March 25, 1897. Serial No. 629,158. (No model.)

Massachusetts, have invented certain new and useful Improvements in Door-Checks, of which the following is a specification.

This invention has for its object to provide a door-check adapted chiefly for holding car-doors in an open position and having provisions also for serving as a stop to limit the opening movement of the door without detaining it in its opened position.

The invention consists in the improved construction which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure l' represents a perspective View of Vmy improved doorcheck shown in connection with a door. Fig. 2 represents a top view of the check. Fig.

3 represents a section on line 3 3 of Fig. 2.-

Fig. 4 represents a view similar to Fig. 3, showing the arm or attachment on the door engaged with the check, the latter holding the door in its open position. Fig. 5 represents a similar view showing the device adjusted as a stop adapted to limit the opening movement of the door without detaining it in its opened position.

The same letters of reference indicate the same parts in all the figures.

In the drawings, a represents a socket formed for insertion in a mortise or cavity in'a floor b. Said socket is preferably of circular form, as indicated in Figs. l and 2.

c represents a buifer which is adapted to play vertically in the socket and is formed to project above the same. The buffer is normally supported in the position shown in Figs. 3, 4, and 5 by means of a spring d, which is supported by the socket and interposed between the latter and the buffer. A shoulder c' on the buffer bears against a stop or flange a', affixed to the socket or to the iioor surrounding the socket,'said flange constituting a stop which limits the upward movement of the buffer. The buffer is provided with an inclined outer face c2, which preferably extends nearly around the buifer and is formed to yield to an arm c, aihxed to the door f, and permit said arm when the door is being opened to depress the buffer and thus slide over the face c2. The buffer is lprovided within the face c2 with a recess c3, surrounded byasubstantially vertical an nular inner face c4. Vhen the arm e has passed over the inclined face c2, the recess c3 permits the buffer to spring upwardly, so that the inner face c4 surrounds the arm, as shown in Fig. 4, said inner face being formed to offer considerably greater resistance'to the movement of the arm than the outer face c2. It will be seen, therefore, that when the arm is engaged with the buffer, as shown in Fig. 4, the door is held with considerable firmness in its opened position and is prevented from Amoving in either direction, unless forcibly moved from the position in which it is thus held.

c5 represents a substantially vertical stopface formed on the outer portion ofthe buffer, said face c5 being preferably the inner Wall of a recess which interrupts the continuity of the inclined outer face c2. The buffer c is adapted to be turned horizontally in the socket, so that the face c5 can be brought into position to encounter the arm e, as shown in Fig. 5, said face c5 being formed to prevent the arm from riding over the buffer and to act as a positive stop to limit the opening movement of the door without preventing its closing movement. It will be seen, therefore, that the device can be used either as a check or holder to prevent movement of the door in either direction or as a stop which holds the door against movement in one direction only, the inclined face c2 and vertical stop-face c5 being interchangeable, as above described.

The upper portion of the socket is preferably about ii-ush with the floor, and as the portion of the buffer `which projects above the socket presents an inclined outer surface it will be seen that the device does not form anobstruction on the floor and is free from liability to trip a person whose foot may come in contact with it.

The socket has an opening a2 in its bottom portion for the escape of dust and dirt which may enter the socket, an accumulation of dust and dirt tending to make the device inoperative being thus prevented.

I claim- IOO l. A door-cheek comprising in its construction a member having a circular inclined outer portion and a central recess, said member being adapted to be attached to a iloor and to yield vertically relatively thereto, and an arm member adapted to be attached to a door to ride over the inclined portion of the floor member and engage the central recess thereof.

2. A door-check comprising in its construction a member adapted to be attached to a floor and to yield verticallyT relatively thereto, said member having an inclined portion and a recess above the incline and having also a vertical stop-face, and an arm member adapted to be attached to a door, the floor member being rotatively mounted to locate its vertical stop-face in or out of the path of movement of the end of the arm member.

3. A door-check comprising a socket or casing adapted for insertion in a Hoor; a buffer movable vertically in said socket and adapt-.

ed to be turned horizontally therein, said buffer having two outer faces, one of which is circular and inclined and formed to yield to an arm attached to a door, While the other is substantially vertical and formed to resist movement of said arm, and an inner face formed and arranged to engage said arm after its passage over the inclined face, the outer faces being interchangeable by a turning movement of the buffer in the socket; and a spring supported by the casing and yieldingly supporting the buffer.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, this 15th day of March, A. D. 1897.

JOHN EVART.

Vvitnesses:

C. F. BROWN, A. D. HARRISON. 

